Fuel-burning mechanism and process of conditioning fuel for burning purposes



rb'l.'1i1 f7 g mpamg 3. 72251% FUEL BURNING MECHANISM AND PROCESS OF CONDITIONING FUEL FOR BURNING PURPOSES FiledApril 15. 1922 8 shae'ts sheet A 3925?? H. 2. MORRES fisifizzvfiw F EL BURNING MECHANISM AND PROCESS OF CONDITIONING FUEL F OR BURNING PURPOSES Filed April 15. 192.2 8 Sheets-finest 2 m 1 1 I I 1 l l 11 l l HLLH llkululllflilllmlluz H92; H. a. Mamas fi fi FUEL BURNING MECHANISM AND PROCESS OF CONDITIONING FUEL FOR BURNING PURPOSES Filed April l5. 1922 8 sneets sheet 5 52 jz J23 1 a J26 I 4 L J? c.

I .4 J? 46% r M 51 6 V /E6 'Illl ia 6/ 45 III Y J a a 46 /9' J 4 5 -58 juiiy W290 H. a. MRRm fi g FUEL BURNING MECHANISM AND PROCESS OF COEFDITIONIWG FUEL FOR BURNING PURPOSES Filed April 15. 1922 Sheets-$136M 4 1929, H. MORRIS L7225= FUEL BURNING MECHANISM AND PROCESS OF CONDITIONING FUEL. FOR BURNING PURPOSES Filed April 15. 1922 8 Sheets-Sheet 1 5 I J /066 r 3 Q J2 2? J? I 2 v "II I HI mg, i] m l J4 a M ,jmfiyfi fl, Wig H. H.-MRR%! fi p w FEEL BURNING MECHANISM AND PROGESS 0F CONDITIONING FUEL FOR BURNING PURPOSES Filed April '15. 1922 8 Sheets-Sheet s 525133, 31922 28 3, mmamg FUEL BURNING MECHANISM AND PROCESS OF CONDITIONING FUEL FOR BURNING PURPOSES Filed April 15. 1922 8 Sheets Sheec 7 3%, 1929. u, MORRIS FUEL BURNING MECHANISM AND PROCESS OF CONDITIONING FUEL FOR BURNING PURPOSES Filed April 15. 1922 I 8 Sheetg-Sheet 8 Patented Jul 30.1929.

UN TE STATES 1,722,504 PATENT OFFICE.

HOWARD I. MORRIS, OF CLEVELAND, OHIO, ASSIGNOB 'IO THE YODER-MORRIS COM- PANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

, FUEL-BURNING MECHANISM AND PROCESS OI! CONDITIONING FUEL FOR BURNING PURPOSES. 1

' Application filed April15, 1922. Seria1No.553,076.

This invention relates to a mechanism for and process of burning fuel, such as fuel or other oils, or other combustible materials. For illustrative purposes, as well as to show 5 one preferred adaptation of the invention, I have shown it applied to or associated with a furnace of the type in common use. for heatin buildings or houses.

ne object of the invention is to provide a fuel burning'mechanism that is relatively simple in construction and capable of conditioning the oil or other combustible material to efiect substantially complete combus tion thereof.-

vide an improved fuel burning mechanism wherein the fuel to be burned is conditioned and mixed with proper proportions of air to insure. its complete combustion, thereby 2o (1) eliminating the deposit of carbon and other ingredients of the fuel, on surrounding objects, the generation of obnoxious gases, and (2) providing economical operation and maximum heating eflects per unitvolume of fuel. v

Another object of the invention is to provide a fuel burning mechanism in which the oil or material to be burned is conducted to and maintained in contact with or thrown against a wall arranged in close proximity to the flame of the burner, whereby such oil or material is vaporized for burning purposes.

Another object of the invention is to provide a fuel burning mechanism in which (1) the oil or material tobe burned is conducted through a passage or passages having a wall disposed in close proximity to the flame of the burner to insure conditioning of the oil 40 or material for burning purposes and (2)- means are provided for maintaining said wall substantially free of carbon deposit.

Another object of the invention is to provide in a fuel burning mechanism novel means for (1) breakingup the oil or material to be burned to insure ready and complete vaporization thereof and (2) mixing air with the vaporized fuel; i

Another object of the invention is to pro;

vide a fuel burning mechanism in which the fuel is conducted to and thrown against a wall disposed in close proximity tothe flame while in contact with air or gas, whereby th Another object of the invention is-to pro-- invention relates from the following Another object of the invention is to provide an improved temperature controlling means for a fuel burning mechanism, whereby the latter will be controlled automatically, substantially uniform temperature is maintained and economical operation results.

A further object of the invention is to provide anovel fuel burning mechanism in -which rotary or centrifugal operating devices act upon the vaporized fuel and airor gas to mix theinin proper combustible pro- 1 portions and to force them in their conditioned state under pressure to the nozzle for burning, whereby efficient heating and economical operation are effected. A further object of the invention is to provide an improved fuel burning mechanism in whichany and all fuel, which in its conduction to the nozzle remainsin liquid or unvaporized condition, is collected at 'a point 4 in the intermediate vicinity of or adjacent to I the-nozzle, whereby the flame burning therefrom serves to finally vaporize such fuel.

A further object of the invention is to provide an improved method of vaporizing fuel and mixing air therewith, whereby the fuel is conditioned to insure substantially complete combustion before its ignition.

A further object of the invention is to provide a novel valve for cutting off and admitting the supply of fuel to insure positive as Well as instant opening or closing of the valve, whereby waste of fuel is avoided and combustion of fuel under abnormal conditions is prevented. 1

Other objects of the invention will be 3P9 parent to those skilled in the art to which my description taken with the accompanying rawings.

Referring to the drawings, Figure l'is an elevational view, partly diagrammatic, showing a furnace, and a fuel burningmechanism and a control mechanism" (which mechanism or mechanisms embody my invention) combined or associated therewith.

Figure 2 is a side elevation of the fuel burning mechanism, parts being shown in section. Figure 3 is a top plan view of the parts shown in Figure 2.

Figure 4 is a section of the line 4-4 of Figures 3 and 5, enlarged, part of the inner memher of the burner being shown in elevation.

Figure 5 is a section of the line 55 of Figure 4. I

Figure 6 is a section of the line 66 of Fig.- ure 4.

F i ure 7 is an elevation of one of the burner memfiers and the means for preventing preignition. I

Figure 8 is a fra mentary section 011 the line 8+8 of Figure l Figures9 and 10 are plan and side views, respectively, of the Valve for the fuel supply pipe, the'latter view being partly in section on the line 1111 of Fig. 9.

, Figure 11 is a section on the line 11 -11 of Figure 9.

Figure 12 is a top plan view of a burner embodying a modified form ofconstruction.

Figure 13 is a section on the line 13-13 of Figure 12, enlarged.

Fig. 14: is a section on the line 1 l-14 of Fig. 13.

Fig. 15'is an elevation of one of the burner members constituting the burner shown in Figs. 12, 13 and 14.

p Fig. 15 'is an elevation of the other burner member.

I Fig. 17.

Fig. 20 is a side elevation of another form of construction embodying my invention.

Fig. 21 is a top plan view of the mechanism shown in Fig.20, parts being broken away.

Fig. 22 is an end view of Fig. 21, parts being broken away.

Fig. 23 is a section on the line 2323 of Figs. 21 and 22.

Fig. 23 is a fragmentary section similar to Fig. 23, enlarged.

Fig. 23. Fig. 25 is a side elevation, artly in section, showing a further modified orm of construction embodying my invention.

Fig. 26 is a vlew, partly in plan and partly in section of the parts shown in Fig. 25.

Fig. 27 is a fragmentarysection on the line -2727 of Fig. 26.

Fig. 28 is a plan view of the fuel and carbon collecting ring.

Fig. 29is a fragmentary end View of the collecting ring.

Fig. 30 is a fragmentary section on the line J 30 of Fig. 26, enlarged.

nthe drawings, 1 indicates a furnace of any suitable construction. The furnace isprovided with a fire box 2, a door 2, and an ash-pit 3 having an entrance opening 3, leading thereto, the 'door for the opening 3 being omitted. 4

A fuel burning mechanism, indicated as an entirety at 4, is shaped or fashioned to extend moval; although it will be obvious that this arrangement is not essential.

6 indicates the supply pipe for the fuel to be burned, such pipe leading from a storage tank 7, preferably supported on a level above the nozzle 5, to permit the fuel to feed by gravity thereto.

By the term fuel I have in mind fuel oils, crude oils and residuum oils, which I have successfully used in operating in a practical manner my fuel burning mechanism; but it will be understood that the invention is not limited to the use of such oils, nor to any particular material or materials or combination of materials.

8 indicates acut-oif in the pipe 6, this cutoff or valve being provided for the purpose of manually controlling the supply of fuel through the pipe 6, either to cut off the supply permanently or regulate the amount which may flow through the pipe from the storage tank 7. i

9 indicates a support preferably of hollow construction to form (1) a housing for certain elements to be later referred to and (2) a conduit for delivering or supplying air or other gas for mixture with the fuel, preferably during'its vaporization and after it has been vaporized, in the manner to be later set forth. The housing preferably comprises a main tubular section 10, which may be substantiallv circular in cross sect1on,'a base section 11 disposed at the outer end of the main section 10v and arranged to support a motor.

12, and a supplemental tubular section 13 which is removably mounted on the inner the nozzle 5 and otherelements, to be later referred to, for conditioning the fuel for ignition or burning from the nozzle; -At its inner end, the upper wall 10? of the main housing section is cut away at 10 and the side walls 10 are connected by an end wall 10, the upper edge of the end wall co-operat- 2 end of the main sect-ion and which supports Fig. 24 1s a section on the line 24-24-of' other gas is admitted to the housing 9. The

opening 15 may be made larger or smaller by the adjustment of a plate 16; such plate be- .ing movable to a position to entirely close the opening 15 when desired. Any suitable means may be provided for inoving the plate 16, that shown consisting of a lug 17 integrally mounted on the plate 16 and having a screw-threaded opening'to receive the screwthreaded portion of a rod 18 rotatably mounted in a bearing formed in a thickened portion 19 provided on the housing section 10. The rod 18 is held against endwise movement b a pair of collars 20, 20, fixed in any suitable manner to the rod and engaging the opposite ends of the bearing. As the collar 20 preferably consists of a winged nut, its wings provide ready means for rotating the rod. By preference, both side walls 10 may be formed with air inlet openings 15, in which event the adjusting plates 16 therefor may be connected together by a section 21 and both operated by a single adjustment means, such as that just described.

As shown in Figures 1 and 2, the base 11 is provided with integral depending walls 22 and the inner end of the section 10 is provided with aaleg 23, which walls 22 and leg 23 serve to support the housing at its opposite ends in a substantially horizontal position, as shown in Figure 1. The leg 23 is preferably formed with two openings 24, 25, extending inwardly from its upper and inner sides or faces, respectively, and the inner ends of these openings merge into a chamber 24' formed in the leg,such openings and chamber serving as a conduit for the fuel as will be obvious from the following description. The supply pipe 6 leads through an opening formed in the flange 26 and brace wall 27 of the section 11 (see Figures 1 and 3) and then longitudinally of the section 10, the free end of the pipe being fitted in the opening 25.

28 indicates a pipe which, at its lower end, fits into the opening 24. The pipe 28 extends upwardly through the housing section 13 and delivers the fuel from its upper end, whereby the same may be vaporized, as will be later described. As shown, the opening 24 in the leg 23'is so arranged that the supply pipe 28 may be arranged centrally of the section 13.

' 29 indicates as an entirety the burner wherein the fuel is vaporized and mixed with air or conditioned for burning and then discharged through the nozzle 5. The burner comprises a pair of concentrically arranged outer and inner members 29, 29, the walls of which are spaced from each other to form around the inner member a passage 29 into which the fuel in liquid form is discharged for vaporization as-it flows to the nozzle 5. The members 29, 29", preferably coi'iform to the shape of the nozzle and are arranged. thercwithin. The members 29, 29". extend beyond the nozzleb (that is. upwardly in the arrangement shown in the drawings) into or within the zone of the flame burning from the nozzle, whereby the wall of the outer member may be heated and maintained in heated condition by. the flame; a'ccoiwlingly, by preference, the members 29*, 29", are annular and preferably inclined toward their upper or outer ends. The walls of the members are preferably substantially parallel to each other'from end to end. i

In the forms of construction shown, the burner is arraiiged vertically and for convenience in terminology I shall use the terms upper and lower as applicable to the arrangement illustrated, but itwill be understood that these terms are not intended to limit the invention to the arrangement illustrated as the burner may be arranged in other positions, for example, horizontally, and operate in the manner to be described.

In the form of construction shown in Fig ures 1 to 8, inclusive, and Figures 12 to 15, inclusive, the inner member is rotated relative to the outer member; whereas in Figures 16 to 22, the walls of the outer and inner members are fixed relative to each other. In View of these differences the walls of the burner members and the nozzle therefor are different in detail construction. Accordingly I will proceed to describe each form of construction separately.

Referring to Figures 1 to 8, inclusive, 29 indicates an annular member surrounding the pipe 28 and co-operating with an annular plate 30 spaced from it to form a radially extending outlet the outer end of which supports the nozzle 5. Theannular member 29 extends outwardly beyond the outer circumferential edge of the plate 30, as shown at 31 and such extended portion is curved laterally relative to the plane of the nozzle, so that the latter will direct the vaporized fuel or the flame from the nozzle 5 upwardly when the burner is arranged vertically, as shown in the drawings.

The annular member29 is provided with a seat 32 flanged at 33 which seat andflange fit correspondingly shapedwalls on the upper end of the housing'section 13, such arrangement insuring concentricity of the burner member 29, which is supported by the an nular member 29 in the manner to be later set forth.

At 34, the upper, surface of the extension 31 is formed with slots, the bottom walls of which are inclined downwardly and the outer side wall of the extension is formed with openings or ducts 35, one leading from the outer end of each slot 34, through which the trough receives and holds a quantity of fuel.

which flows or escapes through the ducts 35 and this fuel is utilized to ignite the vaporized fuel flowing through or from the nozzle in starting the burner, the function of the trough 36 and the advantage in arranging it in close proximity to and around the nozzle 5 will be at once apparent. I prefer to place in therefrom.

burner member 29 and around the trough a quantity of asbestos or other suitable material, indicated at 37, which becomes saturated with the liquid fuel and serves as a sort of wick to spread the flame around the trough. The fuel collected in the trough is ignited by a pilot device of any suitable construction, the illustrated construction shown by way of example being a gas pipe 38, the jet end of which extends through a tubular section 39 formed integrally with the wall of the trough. When gas is used as a pilot device, the supply pipe 40 may extend downwardly through the upper wall 10 and bottom wall 10 of the houslngseetion 10 and then longitudinally thereof; at 41 the .pipe 40 extends through the flange of the section 11 to a source of supply. 42 indicates a valve for the pipe 40.

The upper end of the outer member 29 is preferably closed by an end wall or plate 43. The plate 43 is preferably formed integrally with the 'outerend of the side Wall 44 of the member 29; the inner end of the side wall '44 is preferably formed integrally with the inner circumferential edge of the plate 30. As the plate 30 is relatively narrow, it will be seen that the side wall 44 of the member 29* will be arranged in close proximity to the flame burning from the nozzle 5 and be heated thereby sufficiently to insure vaporization of the fuel discharged into the passage 29, as Wlll later be described. To insure absorption of the heat by or conduction thereof to the side wall 44 of the burner member 29*, the latter isprovided with a plurality of spaced fins or ribs 45 preferably extending radially When the supply pipe 28 is arranged vertically, and the other elements are associated therewith, as shown in the drawings, the

I, may be termed an inverted cup member, but the use of such term is not for the purpose of limiting nor intended to limitthe scope of the invention, for 44 reasons already set forth. Furthermore, at: tention may be directed to the fact'that in ClGSCIlblDg the nozzle 'forming elements and the elements associated therewith as annular,

, .with a downwardly inclined veying the vaporized fuel to the nozzle 5.

At its lower end, the inner member 29 is provided with inturned arms 46, connected to a collar 46*, which .in turn is connected to the upper end of a sleeve shaft 46" surrounding the pipe 28. At or near its lower end, the shaft 46 is rovided with a bushing 46 which rotatably ts the pipe 28. 47 indicates a thrust bearing for the lower end of.

the shaft 46*. The lower race 48 of the bearing may be mounted on the upper end of an I annular boss 49 provided on a pedestal 50 cast integral with the walls of the housing section 10. Near its upper end, but preferably ata point below the nozzle 5, and within the collar 46 is provided with a bushing 51 which rotates on the pipe 28 and co-acts with the bushing 46 to rotatably support the shaft 46 on the pipe-28.

52 indicates a device arranged at the outer end of the fuel supply pipe 28-and beyond the upper end of the inner burner member- '29". The device 52 operates to receive the fuel from the pipe 28 and discharge it in sprayed form or condition into the upper end of the passage 29". In the form of construction being referred to, the spraying device 52 consists of an annular member having a bottom 52 'and a side wall 52 which is curved upwardly and inwardly to form a receiver into which the liquid fuel flows from the'pipe 28. 52 indicates a nut or other device fixed t0 the free end of the pipe28 for. holding the spraying device 52 thereon. The spraying device 52 is preferably connected to the inner member 29 so as to be rotated thereby. The connection between the inner member 29" and spraying device'52 may consist of spaced ribs 52. integrally connected therewith, the spaces between the ribs 52permitting the air or gas to pass from the inner member into the passage 29. 52 indicates openings formed in the side wall 52" sa1d openings preferably extending radially in a downward direction and-serving to discharge the fuel into the passage 29, and in an outward direction against the inner surface of the wall 44 of the outer burner member 29. As the device 52 rotates 'at a relatively, fast rate, and the fuel flows in fine streams from the openings 52, it is broken up and sprayed centrifugall against the wall whereby 1t may be quic lyvaporized by the heat of the wall 44. The side wall 52 of the spraying device is preferably provided flange 52, which serves to direct the sprayed fuel downwardly.

. pre-ignition 53 indicates a plurality of spaced blades arranged radially of the side wall of the inner member 29", and preferably extending from end to end thereof. The blades 53 are preferably formed integrally with the inner member 29 and may be extensions of the ribs 52 already referred to. The blades extend across the space constituting the passage 29, as mdicated at 53, their free edges being parallel to and terminating closely adjacent to the inner surface. of the wall 44; at the lower end of the passage 29 the blades are extended, as shown at 53 andoccupy the space between the annular plates 29, 30. The lower edges of the blade sections 53 may be connected together by an integral annular plate 53. operate as follows: the blade sections 53 operate on the liquid fuel delivered by the spraying device 52 to (a) throw it, by centrifugal action, against the inner surface of the wall 44, such operation being supplemental to the spraying action of the spraying device 52 and by the same action, maintain it against such surface throughout the length of the passage 29 as the fuel flows therethrough to insure vaporization of all the fuel before it reaches the nozzle 5; (b) cause mixing of the air conducted to the passage 29 with the vaporized fuel as it becomes vaporized in the passage 29; and (c) to scrape from the inner surface of the wall 44 carbon which may accumulate thereon from time to time in excess of the clearance between the free edges of the blades and the wall 44. The blade sections 53 serve to (a) mix the vaporized fuel and air delivered from the passage 29 and air drawnup through the housing 13, whereby the fuel is completely conditioned for ignition or burning and (b) force the conditioned fuel through or from the nozzle 5 under pressure. In practical use of my fuel burning mechanism, I have found that the construction and arrangement is such that in operation the element serve within the burner or at a. point within the nozzle opening to uniformly and continuously mix the vaporized fuel and air in proper proportions to insure or effect complete combustion of'thc fuel at or beyond the nozzle opening.

There is provided means for preventing of the burning fuel in the nozzle or between the inner and outer members and for maintaining the ignition of the fuel at or beyond a predetermined point, viz, the nozzle opening. The means preferably comprise an annular wall 54 which extends across the nozzle 5 throughout its circumference and is formed with a plurality of slits 54 through which the conditional fuel passes. takes place on the outer surface of the wall 54, the slits being of a size to prevent backfire into the space behind the wall 54,and causing pre jgnition therein. The slits 54 are preferably arranged The different sections of the blades Ignition V at an angle that is substantially tangential to a circle concentric to the axis of the burner members 29, 29. This arrangement of the slits 54 is advantageous as it permits the conditioned fuel to flow through the nozzle in the direction in which it is forced outwardly by the blades 53". The arrangement also effects a spreading of the flame rather than permitting it to be af* fected by air currents and directed upwardly centrally of the furnace. The wall 54 is preferably convexed and may be formed integrally around its inner edge with the outer edge of the plate 30. The outer edge of the wall 54 preferably engages the upper edge The shaft 55 preferably extends longitudinally of the housing section 10 through an opening formed in its outer end wall 10*,

where it is connected at 55 with the armature shaft of. the motor 12.

' 56 indicates a casing arranged within the housing sections 10 and 13 and surrounding the gears 55, 55, and bearing 47. The casing 56 preferably comprises a bottom member 57 and a cover member 58, the former being formed with an opening to permit it to fit over the boss 49 and be positioned thereby, and the latter being formed with .an opening through which the pipe 28, shaft 46", and a sleeve 59 (to be later referred to) extend. The casing 56 is provided for the purpose of holdinga quantity of lubricant for the gears 55, 55, bearing '47 and bushing 51. The side wall of the member 57 is formed with an opening 57 a through which the driving shaft 55 extends. The wall surrounding the opening 57 is thickened and formed with an annular recess 60, which receives an antifriction bearing 61 in which the driving shaft 55 is supported. The bearing 61 is preferably arranged totake thrusts end-wise of the shaft 55 resulting from the co-action be-, tween the bevel gears 55, 55 The bearing 61 is oiled from the lubricant in the casing 56. The lubricant from the casing 56 is supplied to the bushing 51 by means of a spiral groove 62 formed in the outer surface of the pipe 28 and extending) from'a pointv below the upper end of the ushing 46 to the bushing 51. Due to its rotation, the bushing 46'" will cause the lubricant to flow upwardly through the groove 62 as the shaft 46 rotates, to the bushing 51. At 63, the bushing 51 and shaft 46 are formed with aligned openings 4:6 which permit the escape of the lubricant from the bushing 51 and groove 62 to the outer surface of the shaft 46, whereby it may flow down the shaft into the casing 56, the sleeve member 59 being spaced from and surrounding the shaft 46 to form a conduit 63 for the lubricant as it flows back to the casing 56. The conduit 63 is preferably formed by cutting away the outer wall of the shaft 46" throughout its length from a point above the openings 46 to a point below the casing member 57. As shown, the sleeve member 59 extends through the opening in the casing cover member 58, where it is formed with an escape opening. The lubricant is supplied to the casing 56 through a pipe 65. The pipe extends through the housing section 10 and wall 10 thereof, its outer end extending upwardly, as shown at 66. The pipe 66 is of a predeter mined height so as to serve as a gage to permit filling of the casing 56 to and maintaining of the lubricant therein at a predetermined level. The inner end of the pipe 65 fits into an opening 67 formed in the pedestal 50. The opening 67 is connected to a duct 67 formed by recesses in the opposing walls of the boss 49 and casing member 57, which dis charges the lubricant into the casing 56.

In the construction disclosed, I have for illustrative purposes, shown an electric motor connected directly with the shaft but this shaft may be driven by other suitable means. The motor or other driving means may be controlled by a suitable mechanism (indicated as an entirety at 68) the opera tion of which depends upon the temperature of a room heated by the furnace 1. Since the motor 12 is connected through its armature shaft to the shaft 55, the mechanism 68 controls the current thereto. The controlling mechanism 68 operates to (a) cut off the current to the motor 12 and the supply of fuel through the pipe 6 when the temperature in a room heated by the furnace 1 rises to or above a certain degree of temperature and (b) starts the motor 12 and permits the-flow or supply of fuel through the pipe 6 when the temperature of the room falls below a certain degree of temperature. Of the mechanism 68, 69, 70, indicate a pair of leads connected with a suitable source of current supply and leading to the two terminals of the motor 12. p 71 indicates a solenoid preferably connected in series,'by leads 7 O, 70 with the motor 12. The core 71 of the solenoid is connected to the valve element 72 of a valve mechanism 7 3, whereby the valve is opened when the solenoid winding is energized and closed vwhen such Windin'g is die-energized. The construction of the solenoid71 and valve mechanism 73 will be later referred to: 74'

indicates a pair of"contacts disposed in the lead 70 and 75 indicates, a switch arranged to engagethe contacts 7 4 and close the circuitto the motor 12 and solenoid 71. The switch 75 is preferably connected to move with one arm 76 of a rocking plate 7 6 pivoted intermediate its ends on a support 77. The switch 75 comprises a plate of conducting material fixed to but insulated from the arm 76 in any desired manner. The arms 76, 7 6, of the plate 76 form arm'atures for electro-magnets 78, 7 8, respectively, fixed to a base 79 in any suitable manner. 80, 80, indicate a pair of contacts disposed above and below the arm 76, one contact (80) being arranged to be engaged by the arm 76 when it is elevated and the other contact (80) being arranged to be engaged by the arm 7 6 when it is lowcred. 81 indicates a lead extending from the contact 80 to one end of the coil of the adjacent electroanagnet 7 8; 82 indicates a lead extending from the other end of the coil of the electro-magnet 7 8 to the terminal of a contact 83 mounted on a suitable supporting plate .84. 85 indicates a lead extending from the contact 80 to one end of the coil of the other electro-magnet 78; 86 indicates a lead extending from the other end of the coil of the electro-magnet 78 to the terminal of a contact 83 mounted on the plate 84: and spaced from the contact 83. Each of the contacts 83, 83 preferably comprises a rod which extends through and has screw threaded engagement with the wall of an opening formed in a post 83, whereby the contact may be adjusted relative to the other contact, for a reason to be later set forth. 87 indicates a transformer of any suitable construction interposedin the circuit through the supply wires 69, 70,-one side of the transformer being connected vby a lead 88 to a terminal 89 on the base 79 and electrically connected with the rocking plate constituting the armatures of the electro-magncts 7 8'tl1ro1'igh its fulcrum and the support 77, and the other side of the. transformer being connected through a lead 89 to a terminal 90011 the plate 8+1. 91 indicates a thermostat mounted on the supporting plate 84. The thermostat is electrically connected with the terminal 90. The free end or movable arm 91 of the thermostat is normally disposed substantially midway between the contacts 83, 83, so that when movement thereof, due to temperature changes, takes place, the arm 91* will engage one of the contacts and close the circuit through one of the eleetro-magnets' For example in the position shown in the drawings, the arm 91 is in normal position, the circuit acrossthe contacts 74 is broken and accordingly the motor 12 is not running, the coil of the solenoid is de-energized and the valve element 72 is seated, as shown in Fig. 11, to cut off the fuel supply. If the temperature of the room rises, the thermostat arm 91 will swing over and engage the contact 83, which .is connected with the electro-inagnct 78, but

as the circuit therethrough is broken the arm 76 being out of. engagement with the contact 80, the rocking plate 7 6' will remain in the position shown; now. if the temperature of theroom falls below a certain predetermined degree of temperature, the arm 91* will swing over into engagementwith the contact 83*; as the armature 76 is in contact with the contact 80; such engagement will close the circuit throu h the coil of the electro-mag net 78, there y attracting the armature 76 and closing the main circuit through the conpredetermined degree of temperature, the

arm 91 will swing over into engagement with the contact 83. As the armature 76 is ,in contact with the contact 80, such engagement will close the circuit through the electro magnet 7 8*, which will attract the armature 76 and rock the plate 7 6 to the position shown in full lines in Fig. 1, thereby breaking the main circuit across the contacts 7 4., which Will cause motor 12 to stop and the valve 73 to close. The rockingplate 7 6' will remain in the position until the temperature of the room falls below the predetermined degree of temperature, at'which time the circuit will be closed through the electro-magnet 78 in the manner already described. By adjusting the contact rods 83, 8'3, engagement of the thermostat arm 91 therewith may be caused to take place at any desired degree of temperature above or below the degree of temperature at which the arm 91 stands in neutral position. The thermostat 91 may be laced in any room or at any other place relatlve to the furnace 1 which may be determined upon.

From the foregoing description, it will be noted that when the rocking plate 7 6 is in either position, its movement to that position causes the breaking of the circuit through the electro-magnet coil which effected its movement to that position and closes the circuit through the electro-magnet coil which is to effect its movement to the btherposition upon the engagement of the arm 91 with the other contact 83 or 83, such arrangement being ef fectedby connecting the rockin plate 7 6' to one side of the transformer an positioning the contacts connected to the coils ofthe electro m'agnets so that the armature when moved breaks the circuit to the electro magnetwhich has caused its operation and closes the circuit.

to the electro-magnet which is] to operate it in the opposite direction. The main circuit maybe rovide'd with a manually controlled switch not shown).

Referring. to Figs. 9,10 and 11, 73 indicates a valve casing having end collars 7 3" to which the ends of the supply pipe 6 are connected in a well known manner. 73 indicates the conduit through the casing 7 3 shaped to form a seat 7 3 for the valve element 72, which may comprise a ball. 91' indicates a hollow boss formed integrally with valve casing 73 and concentric to the valve seat 7 3 the inner end of the boss communicatingwith the conduits 73 through an opening 92. 93 indicates a sleeve upon which the solenoid may be wound. The sleeve 93 is preferably extended into and has screw threaded connection with the inner wall .of the boss 91. 94 indicates a nut which is tightened on the sleeve 93 against the end of the boss, such arrangement serving to rigidly connect the solenoid'in operative position to 1 the valve casing 73 72% indicates a stem fixed to the ball 72 and loosely extending through an opening formed in a cross piece 7 2 carried by the lower end of the core 71. The upper end of the stem is provided with a head 72, which is engaged by the cross piece 72, carried by the lower end of the core 71, to lift the valve element 72 from its seat 73 when the core 71 is operated. The core 71* preferably comprises a section of tubular magnetic material to provide ample space for the movement of the valve stem 72 in the manner to be later set forth. 95 indicates the terminals for the solenoid winding.

96 indicates a plug fitting into the upper end of the sleeve 93 and serving as a stop to limit the upward movement of the core 71, 1 as shown in Fig. 10. When the circuit through the lead Wires 69, 70, is closed in the manner already described, the solenoidwill operate the core 71 upwardly; As the core 71 moves upwardly, it will pick up the valve element 7 2, through the engagement of the cross piece 7 2 with the head 72, and unseat the valve element, as shown in Fig. 10. As the core 71 will attain considerable momentum by the time it picks up the valve element 72, the latter will be operated to its full open position with a snap action or relatively quick movement, thereby permitting the full supply of fuel to flow to the burner.

The plug 96 is preferably formed of magnetic material so that it will act as an electromagnet to attract the core 71, thereby supplementing the action of the solenoid. This arrangementis advantageous as the plug is preferably arrangedto stop the core at the theball 72 at its lower end. As the sleeve 71 rests on the ball, it moves upwardly and downwardly therewith. The sleeve 71 is of such length that it will be engaged by the cross piece 72 in the downward movement of the core 71 accordingly, when the coil is de-energized, the core 71 moves downwardly and causes the cross piece 72 to strike the sleeve 71 and through ittoimparta hammer blow to the valve element 72, causing the latter todislodge any accumulation on the valve seat and positively shut off the fuel supply. 1 a is If desired, the housing 9 may be supported on a plurality of legs c9,"each of which may be adjustable to make it longer-or shorter so that the housing maybe properly supported in horizontal position. Each of the legs may comprises a Wall having a; vertical opening 9", formed in it and a pin 9".- adjustably' fitting the opening and fixedtherein by a suitable- 5 set screw 9. Thisjconstruction permits each leg to engage thefloorirrespective of the unevenness that may existtherein, p

The operation 'of thefburner. may now be fo' h The Pil t 3$ main ine g e Ua i 'i wh f 'l its. 'Upon-the openingof the valve 7 3 the-"fuel flows] through "the; pipes; 65' and 28- and ,oye'r f flows from: the: latter v'into ,f the 'jreceiveri "52.

The fuel is dischargedffromthe receiver, 52 intothe passage 29 through, which'it flows.

As the; blades 53 arebeing rotated by the mo-' tor 12, they throwthe fuelradially on tojthe. extended portion 31, andsuch fuel will flow; throughthe slots 34, andfducts 35-int'o the -trough'36, saturating the asbestos 37. The fuel in the" asbestos will be ignited by the pilot-'38, the asbestos acting'as a sort ofwick and causing the flame 1n the trough to extc'nd around the nozzle5. As the rotating blade sections 53 force a portion of the fuel (which has been broken upinto spray form by the centrifugal actions of the receiver and blades 53) through the slits 591"- in the-Wall 54, bridging the nozzle opening, this fuel is ignited from the flame in the trough 36. As the nozzle 5 continues to burn, the flame therefrom will heat the wall'44 of the outer burner member 29, which in'turn, upon attaining sulficient heat, will conductthe heat to the inner surface of the wall and thereby cause vaporization of thev'fuel' sprayed against it by the receivingand spraym device 52. The vaporized fuel and air the path of movement of the blade sections 53 and these sections will 7 act on the vaporized-fuel and the air mixed therewith and on the air. flowing up through the casing section 13 to mix them and 'to then force the mixed fuel and air outwardly between the plates 29, 30, throu h or from the nozzle opening. The airis supplied in proper proportions sothat upon being mixed with the vaporized fuel. the latteris conditioned for complete combustion. When the walla l becomes heated sufiicie ntlyso that its heat will vaporize all of the fuel-sprayed against ows' downwardly through the passage 29 into.

it, the 'flame from the nozzle takes on a substantially bluish appearance, showing that complete. combustion is being effected.

It. will thus be seen that as soon as the wall 44'becomes heated, all the fuel will be vaporized; thereafter the supply of fuel to ii the trough 36 will stop and the flame there- Y tfiomiwill' go out. The fuel sprayed against e wall 44 is maintained in contact therewith as the fuel'flows towardthe nozzle 5 by .i the centrifugal action of the bladesections' 53 th'roughouttheir length or until all portions' of the .fuel are vaporized, As a result of the centrifugal forces set up by the r'otat-c ing blades,so longas the fueljremains in liquid form it is maintainedin' contact with the heated w all, thereby insuring'its complete vaporization before ibis-acted on by the blade sections 532' ,I preferwto extend the blade sections fiii acrossthe passage 29, so that they will terminate parallel and close to the inner surface of the walli44. By'v this which may; accumulate thereon; -I- prefer meet carbon." I i H v I prefer tQ-makethe inner member 29 hollow and'to provide air or gas discharge openings leading fromits u which is tobe mixed'with the vaporized fuel to flow down through the passage 29 and I ,erend into the p'assage' orchannel- 29. his arrangement permits a portion of thefair. or gas mix with the fuel durin and following. its

vaporization. By allowing the air to flow through the burner as described, all the elemerits of the burner includin v the. outer burner member are maintains j at a 'rela-.

tively low temperature, so that. the metalof such elements will not"'d'e terioratefrom the effects of the heat fromithe burner.,After,

the nozzle 5 is once lightedytheconditioned fuel-discharged therefrom will" continue to burn until the motor 12 and fuel'isupply is cut oil, either manually, or by; operation of r v the temperature controlimechanism 68, already described. After a the fuel burning mechanism 4; is once operated and then shut off, the. fuel which haspassed the; valve 73 i and from the latterinto the passage 29? upon will remain in the pipes 6 and: 28 read to be immediately discharged into the-receiver 52 the re opening of the valve '73 vandthe restarting-of the motor 12. Accordingly, in

anism 68, there will be no delay in the res ignition of the nozzle, since the; latter and the theopera'tion of-the motor 12'and'valve'73 i by means of the temperature control mech trou h: surrounding it 'will be relatively quic ly supplied withthe necessary fuel.

- In Figs.v12 to 15, inclusive, .1 have shown a modified form of a fuel'-burner.;.1In these views, 13 indicates a supplemental casing member. 28 indicates the fuel supply pipe leading upwardly therethrough. 29, 29 indicate the outer and inner burner members," respectively; the latter member being provided with spiders 97 integrally connected with a sleeve or hub 98 fitting a reduced portion 99 of the sleeve shaft 46 7, As shown, the sleeve or hub 98 engages 'a shoulder 99 formed by the reduced portion 99, whereby theinner member'29 is rotatably supported in co-operative relation to the outer member 29*'. '29 indicates an annular plate seated on the upper end of the casing section 13 andco-operating with a plate .30" spaced from it to form a nozzle 5. The annular plate 29 extends beyond the outer edge of the plate 305 as shown at 31*, such extended portion being curved upwardly, as shown. The burner members 29 29-, may be similar in shape to the burner members 29 29". The side walls of the burner members 29, 29, are spaced from each other to form a fuel passage 29'.1 The upper end of the outer member 29" is preferably closed by a plate 46. Due to the fact that the inner burner member 29" and the spraying device 5% are mounted near the upperend of the supply pipe 28, the latter is extended upwardly and fits into a recess 46* formed in the plate 46, to maintain the pipe 28 rigid and overcome wobbling effects resulting from the rotation of the inner member 29" and spraying device 52 4:5 indicates ribs arranged radially on the outer surface of the side wall 44 of the outer member 29*" and extending from end to end thereof; certain of the ribs preferably extending diametrically across the end plate 46".

100 indicates blades disposed radially of and uniformly spaced around the sidewall of the inner member 29 The sections 53 of v the blades extend from endto end of and across the passage 29. The sections 53" of the blades are disposed betweenthe plates 29, 30. The blade sections 53 53" respectively, operate in the manner already set forth with respect to the blade sections 53 53 The inner member 29" is open from end to end to permit air or gas to flow into the upper end of the passage 29 and to the blade sections 53*" for mixture with the vaporized fuel. To permit of this operation and thus insure the supply of sufficient air or gas to insure the proper conditioning of the fuel, the side wall of the inner member 29" terminates at a point above the lower edges of the blade sections 53 or their annular connecting plate 53 so that the lower and inner portions of the blade sections 53" may operate as a centrifugal pump to draw air or gas up through the housing and supply it for mixture w th the vaporized fuel.

The spraying device 5% may comprise a cup shaped member which receives the'fuel delivered through ports 28" formed in the ipe 28. As the cup is rotated, it causesfthethe threaded free end of the shaft 46. The Y spraying device 52 is screwed down on the shaft 46" into engagement'with the inner burner member 29, thus serving as a clamping device or nut to connect the inner member 29 to the shaft 46" and itself to said shaft and the said inner member. The upper portion of the wall 52 is enlarged to form a seat for an annular antifriction bearing 101, the inner race of'which surrounds the supply pipe 28. It will therefore be seen that the upper end of the shaft 46" is rotatably supported by the bearin 101. The bearing 101is held mits seat an in operative positi'onb a suitable nut 102, engaging the pipe 28 a ove the bearing,

103 indicates ports formed in the flared portion of the wall 52" below the bearing 101. These ports permit the fuel which gravitates through the bearingto flow therethrough into the receiver 52*'. I prefer to expose the bearing 101 in the manner shown to permit a portion of the fuel to flow through between the races of the bearing to lubricate it. y

To prevent the fuel-from flowin down between the pipe 28 and shaft 46, provide a flanged ring 104 which snugly fits the pipe 28 and bridges the space between these, elements, the flange of the ring forming a skirt which fits over the end of the shaft 46" as shown in Fig. 13. p

54 indicates means for preventing preignition of the fuel before it reaches the nozz e opening and for maintaining the ignition of the conditioned fuel at or beyond the noz- I 106 around the burner member 29 107 indicates a combined collecting and guide member surrounding the outer circumferential edge of the plate 30 and extendingabove and below, the plate 30. The guide107 is substantially semi-circular in cross section.

In the event any fuel delivered by the spraying device'52 remains in a liquid state when it reaches the lower end of the wall 44, the

nozzle 5. As the guide 107 is in or imme-.

diately adjacent to the flame, it will be maintained at a relatively high degree of tempera ture so that any liquid fuel thrown agalnst the guide will be vaporized and such vaporized fuel will be ignited by the flame as it passes through the annular slot or openlng between the free upper edges of the guide 107 and flange 105; but in the event the fuel d1scharged against the guide 107 is not vaporized by the heat thereof, it will be discharged into the channel 106 where it will be acted upon directly by the flame. The guide 107 is preferably formed integrally with the Wall '54 and connected by ribs or webs 108 with the plate 30'.

As the guide 107 extends below the plate 30 it will be seen that after the burner is operating, a portion of the conditioned fuel will be thrown against it and such fuel Wlll be directed through the slot between the flange 105 and the upper end of the guide 107, where it will burn. As the flame from this fuel is directed toward the wall 44, it will serve to maintain the latter heated to a relatively high degree of temperature, to that extent supplementing the action of the flame from the nozzle 5.

38 indicates as an entirety a pilot devlce for igniting the fuel, whereby the burner may be set in operation. The form of construction shown in Figs. 13 and 14 for illustrative purposes comprises a gas supply pipe 109 extending to a point substantially above and between the channel 106 and trough 36 which are arranged concentrically to and adjacent the inner and outer edges, respectively, of the nozzle 5. As shown in Fig. 13, the plates 29 and 30 are formed with aligned openings to receive the pipe 109 The pipe 109 delivers the gas into a substantially radial duct 110 formed in a thickened portion of the wall 30'. The opposite ends of the duct 110 serve as gas or pilot jets and ignite the fuel. delivered into both the channel 106 and trough 36, it being understood that in starting up the'burner, the blades 53' force the sprayed fuel against the guide 107 (as well as outwardly through the nozzle 5 and into the trough 36 which delivers it into the channel 106. ccordingly, in this form of construction twoigniting flames are provided, one around each edge of the nozzle 5'.

Referring to Figs. 17 and 19, inclusive, 111 indicates a casing orhousing having at one end an extended member 112serVing as a base for an electric motorlfl. The casing 111 is preferably hollow, as shown in the drawings. The extended member 112 is provided with nism is mounted. 114 indicates a standard for supporting the other end of the casing.

If desired, the extended member and the standard 114 may be provided with adjustable legs 115, 116, 117, each similar in construction to the legs already described in connection with Figs. 1 and 2, whereby the casing 111 may be arranged horizontally. The casing 111 is closed at its outer end by an end wall 119. The wall 119 is formed with an opening 120 through which a shaft 121 extends for connection (as indicated at 122) with the armature shaft of the motor 12*. The inner end of the casing 111 is preferably closed by a wall 123. 123 is an opening formed in the upper wall of the casing 111 near its inner end, the circumferential edge of the opening serving as a seat for a supplemental casing member 13 of tubular shape and arranged vertically.

124 indicates a pipe for the fuel leading from a suitable source of supply (not shown)". At 125, the pipe is provided with a valve, which is manually controlled, and at 126 the pipe is provided with a valve mechanism opened and closed by a solenoid which in turn, together with the motor 12 are controlled by a temperature controlled mecha- IllSIIl, which, if desired, may be of the construction already described in connection with the form of the invention'shown in Fig. 1. The pipe 124 leads through an opening formed in one wall of the extended member 112 (see Fig. 17) and then longitudinally of but preferably below the casing 111, being connected to a port 127 formed in the leg 114 and communicating at its inner end with a vertically arranged opening 128 also formed in the leg 114 in alignment with the axis of the casing member 13". 28 indicates a pipe supported at its lower end in the opening 128 and arranged to supply fuel from the opening 128 to the burner members 129, 130, to be later referred to.

131 indicates a sleeve shaft surrounding the pipe 28 and extending upwardly through the casing member 13 and the inner burner member 129, and arranged to rotate a combined fuel receiver and spraying device 132 to be later referred to. The lower end of the shaft 131 is fitted within and secured in any suitable manner to the hub 133 of a bevel gear 134. The gear 134 is provided with a suitable recess to receive an antifriction bearing 135, the inner race of which is supported upon an annular boss 136 surrounding the pipe-.28 and formed integrally with the bottom wall of the casing or housing 111. 137 indicates a sleeve shaft surrounding the sleeve shaft 131 and extending upwardly through the caspoint within the inner burner member 129. 138 indicates a bevel gear secured in any suitable manner to the lower end of the sleeve shaft 137. 139 indicates an anti-friction bearing interposed between the lower end of the sleeve shaft 137 and the sleeve shaft 131 to permit of rotat-i-ve movements of one shaft 1 relative to the other. 140 indicates a pair of nuts engaging. screw. threads provided upon the sleeve shaft 131 and serving as a. shoulder or collar for the inner race of the bearing 139, and supporting through such bearing the sleeve shaft 137. 141 indicates a bevel gear meshing with the gears 138 and 134, whereby said gears and; the: shafts respectivelyv connected thereto, arerotatedin opposite-directions. The gear- 141 is connected to theinner 'end of the shaft 121, whereby the motor 12 drives the gear 141. I The shaft 121 is preferably mounted'at "or near its opposite ends in anti-friction bearings 142, 142?, which are supported in collars integrallyformed with the walls of the housing 111. 143 indicates an anti-friction. bearing arranged between are disposed slightly below the lower open the sleeve shaft 131 and's leeve shaft 137 near the upper end of the latter and operating to rotatively support the shaft 137 on the shaft 131. The inner wall of. the shaft 137 is provided with an annular shoulder 137v which forms a seat for the bearing 143. f 143*indicates a bushing mounted in a'recess formed in the shaft 131 and lrotatably fitting the pipe 0 28", it co-operating with the bushing 133 to support the-shaft, 131. As shown in the.

drawings, the bushing 143*1and bearing 143 endof the inner member 129Qand the nozzle of the burner, thisarrangem'ent preventing undue heatin'g'of the bearings at ;all tlmes.

144 indicates an annular memberjsurrounding the upper end of the sleeve shaft 137 and I 1 connectedthere'to; by Llafis'eries' of arms or burner member 129. y The innerlburnermember 129'comprisesaw spokes 145.; Theannular member 144 serves as a support for the burner members 129, 130. The member'144 issliaped to form'a seat for an annular boss'144 provided on the inner hollowdevice having a conical side wall 130? and. an outwardly" extending. flange. 130

around its lower'edge.i As shown, the lower 1 portion of the wall 130?: curves outwardly and the flangecurvesupfwardly, so'as to direct the fuel to be burned-in a'rad alja-ndup wa'rdly inclined direction. fl30 indicatesa plurality of ribsor 'bladesf disposedradially of the side wall 130 andextending from end to end thereof and-'thenradially 'ofth'eifiange 130", as shown at 130, to its circumferential ed e. At the point of connection' of" the'ribs 130 with the ribs 130, I provide an annular ring 145?, whichco-operates withithe outer I 'edgeof thefl'ange 130 to nozzle opening 130. y I, I

The outer member 130 preferably cornform anoj'zzle or prises a casing or shell which fits over and rests upon the outer side edges of the ribs or blades 130. As shown in Fig. 17*, the lower free edge of the casing or shell 130 extends downwardly and overlaps the wall, constituting the ring 130. The side wall of the shell orc'asing 130-is spaced from the side 'wall of the inner member 129 by'the ribs 130 collect, any fuelwhich, flowing down the side wall of the shell 130, remains in liquid form and to prevent such fuel from flowing .into andthrough the nozzle until it' becomes vaporized.

Of the receiver and spraying device 132, 147 indicates a collar fitting over and having screw threaded connections withQthe upper end of the sleeve shaft'131. The upper end of the sleeve shaft 131 is preferably reduced to form a shoulder against which the collar 147 is tightened. 147'indicates'an annular,

outwardly flaring wall extending upwardly I from thecollar 147 and connected to a wall 148 which extends over the free or discharge end of the'pip'e -28 and=co operates with thewall 147 to forma chamber-147" into which thev fuel is discharged from thepipe 283' The collar 147 and ;v'all s"147- 148, are preferably formed integrally; The wall 148 preferably extends radially beyond the wall147:

andterminates closely adjacent to the inner sidewall of theburner member 130,- 149 f indicates a pluralit' of ducts or ports formed in the wall 147 an uniformly spaced around the' collar'147 for discharging thefue'l'from the chamber 147 in a downwardly inclined direction into the upper "end offthe passage "14651-150indicates a pluralityof blades extending radially of the collar 147 and uni-' forml'y' spaced th-erearound, each being prefaerablyarranged' adjacent to one of the ducts 149:". The plates terminatev at their outer edges,- relatively close an parallel ed, .the 'upper'endsof-thefribs 130. Due'to the'rota tiOILiOftllG receiver, and spraying device 132 the-shaft-131, 'it;.will bej'seen that the fuel is thrown outwardly and 'downwardlyin relas ti'vely fine streams by 'theduct's 149 and that the blades 150 by reason of their co-action with the blades-1309'serve" to break the fuel .up into sprayforni and-to discharge it centhef'uel will be readily vaporized as it flows trifugally againstthe'inner surface of the, [side wall. of the outermember 130, whereby sage 146, whereby the air may mix with the fuel as it vaporizes, to condition the fuel for ignition or burning from the nozzle 130".

151 indicates a device adjustably supported upon the sleeve shaft 137 and arranged to control the lower end of the opening extending into and through the inner member 129. The device 151 comprises an annular plate, having a hub fitting the sleeve shaft 137. The hub of thedevice 151 and the outer wall of the sleeve shaft 137 are provided with screw threads, whereby the rotation of the device 151 about the sleeve shaft 137 will cause it to inove endwise thereof to move the platetoward and from the opening defined by the ring 144 leading into. the inner member. with one or more lugs 152, by means of which it may be rotated.

153 indicates a trough surrounding the nozzle 130". The trough is supported by a plurality of brackets or arms 154 which are connected at their inner ends to a collar 155. The collar 155 adjustably fits'the upper end of the casing member 13 and may be secured thereto in its adjusted position by a set screw 156. throughout its circumference with a quantity of asbestos or other suitable material, which will absorb the liquid fuel supplied to it through the burner and nozzle in starta ing the burner, and such fuel may be ignited by a suitable pilot device indicated as an entirety at 157; The pilot device 157 may beof the form of construction shown in Figs.

" 17 and 17, or such pilot device maybe of some'other suitable form of construction, as

already set forth herein in connection with the construction illustrated in Figs. 1 to 8,

inclusive.

158 indicates a conveyinIg into the supply pipe 28 device extending om its discharge end and serving to cause the discharge from k the upper end of said pipe of a substantially uniform quantity of'fuel while the burner is W; spiralweb which rotatabl"" fits within the e in operation. The conveying device 158 may lalso'be used 'to feed the fuel into the receiver where the source of supply is arranged below the discharge endof the pi ,e 28?. The conveying device 158 prefera lyz' comprises. a

p 1. end of the pipe 28'. he upperor free endlbf the. conveying device 158-is provided with screw threads and such screw. threaded end fits'into a screw threaded opening-formed in the :wall 148 ofthe spraying'device 132,

The device 151 ispreferably provided.

The trough 153 may be provided :flows, the

around the member 151. The wall 151 is integrally with the flange such construction serving to oo'nnectthe con-' veying device 158 to the spraying device 132,

whereby said conveying device 158 will be rotated by the spraying device 'to effect the feeding and discharge of the fuel into the chamber 147. 158 indicates a cap having screw threaded engagement with the upper end of the latter and prevent the fuel from flowing down between the pipe 28 and the shaft 131. x I J The gears 134, 138 and141, as well as the bearings 142, 142, are lubricated by the lubricant which is maintained at a suitable height within the casing 111, the latter being shaped i and formed to hold sufiicient lubricantfor this purpose. To lubricate the bearing 143 and bushing 143, I provide the outer wall of the pi e 28* with a spiral groove 160, which extends P011121, point within the casing 111 to a point above the bushing 143. The lubricant is caused to flow through said groove by end of the pipe 28 and fitting over the free end of the sleeve shaft 131, to close the upper reason of the rotation of the shaft 131 in a a well known way and as already described herein.

At a point above the bushing 143, the

sleeve shaft is formed with a plurality of ducts 161 through which the lubricant, conveyed upwardly b the spiral groove 160, isdischarged into t e space surrounding'the shaft 131so that it may flow into and through the bearing 143 The lubricant supplied to the bearing 143 may flow downwardl between the shafts 131, 137,'through the earing 139 and back into the casing 111. 1,62

indicates an opening formed in the inner end wall of the housing 111, such opening being screw threaded and closed by a suitable plug 163.

151 indicates as an entirety means for preventing pro-ignition in the nozzle 130 or between the inner and outer burner members 1129, 130, and for maintaining the ignition of the fuel at or beyond apredeterminedpoint. The means 151 may comprise an annular member or wall 151 bridging the nozzle opening 130 and 'formedwith a series of slits 151' throu h1-. whichthe conditioned, fuel s its 151 bein-g'uniformly spaced preferably formed 130 and ring 145". I

' In starting the burner in the construction lastdescribed, upon the o'penin of the valve in thesupply pipe 124, the fue flows there-.

through. and through the pipe 28", from which it is discharged into the chamber 147. From a the chamber 147 the fuel '.is' discharged in spray. condition centrifugally 1 into the passage 146.; The sprayed fuel flows down the passage 146 and is thrown centrifugally outwardly through. the nozzle 130 by the blades 130. This fuel or a portion thereof will fall into the trough 153 where it willbe ignited 

